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Chapter 11: Q.2.3 (page 703)

Calculate the chi-square statistic. Show your work.

Short Answer

Expert verified

The chi-square statistic is 19.49.

Step by step solution

01

Given Information

The table is,

02

Explanation

The formula to compute the chi-square statistic is:

蠂2=鈭�(Observed-Expected)2Expected

Calculation:

The expected counts are,

Use FacebookMain CampusCommon wealthSeveral times a month or less77.5653.44At least once a week220.25151.75At least once a day612.19421.81

The chi-sqaure statistic is calculated as:

蠂2=鈭�(Observed - Expected2Expected

=(55-77.56)277.56+(76-53.44)253.44+(215-220.25)2220.25鈥�鈥�鈥�+(394-421.81)2421.81

=19.49

Thus, the chi-square statistic is 19.49.

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